Striping instrument



W. C. HARBISON STRIPING INSTRUMENT Filed June 28. 1929 Aug. 219 1934.

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STRIPING INSTRUMENT William Carl Harbson, Detroit, Mich., assignor to Packard Motor Car Company,

Detroit,

Mich., a corporation of Michigan Application June 28, 1929, Serial No. 374,416'

3 Claims. (Cl. 91-62.6)

This invention relates to striping instruments.

An object of the invention is to provide an instrument adapted to apply a stripe of paint or lacquer to a surface.

5 Another object of the invention is to provide an instrument adapted to apply a stripe of paint or lacquer having means providing a positive flow ofthe paint or lacquer, and means for controlling the flow.

Another object of the invention is to provide an instrument adapted to apply a stripe of paint or lacquer having means for ejecting the paint or lacquer through the nozzle of the instrument and manually operated means for controlling the ow.

Another object of the invention is to provide an instrument adapted to apply a stripe of paint or lacquer having means for feeding the lacquer through the nozzle of the instrument 'and means associated with the nozzle for controlling the flow of the paint or lacquer.

A further object of the invention is to provide an instrument adapted to apply a stripe of paint or lacquer having a container for paint or lacquer, a nozzle connected therewith, means in the container for imposing pressure upon the paint or lacquer to eject it through the nozzle, and means associated with the nozzle to control the flow.

A further object of the invention is to provide a striping instrument comprising a container and a nozzle and a control member intermediate the container and the nozzle.

A further object of the invention is to pro- Vide a striping instrument having means whereby the container may be easily and quickly supplied with paint or lacquer without removing the top thereof.

Yet a further object of the invention is to provide a striping instrument having means for withdrawing surplus paint or lacquer from the nozzle at the end of the stroke of the instrument. Still a further object of the invention is to provide a striping instrument having means adapted to produce a vacuum at the will of the operator to withdraw the paint or lacquer from the nozzle of the instrument.

And yet a further object of the invention is to provide a striping instrument having means adaptable to close the passage in the nozzle of the instrument and to simultaneously produce a vacuum to create suction at the discharge end the nozzle of the instrument.

A feature of the invention is a cylindrical barrel or body portion having positioned therein a spring pressed plunger imposing pressure on the contents of the barrel, and means for actuating the plunger to lill the barrel or body portion.

Another feature of the invention is a barrel or body portion having positioned therein means for imposing pressure on the contents of the barrel, and a nozzle associated with the barrel having arranged therein means for controlling the passage in the nozzle.

A further feature ofthe invention is to provide a striping instrument having a barrel or body portion provided with means for imposing pressure on the contents of the barrel, and a nozzle associated with the barrel provided with means for closing the passage in the nozzle and producing a vacuum to create suction from the nozzle below the closure means.

A still further feature of the invention is to provide a striping instrument which is positive in operation and yet provides a marked sim- 5 plicity as a whole in respect to each of its component parts, so that its manufacture may be economically facilitated both as regards to parts and their assembly.

Other objects of the invention will appear from the description taken in connection with the drawing, which form a part of this specification, and in which:

Figure 1 is a vertical sectional view of a striping instrument embodying the invention, 5

Figure 2 is a cross sectional view taken substantially on lines 2-2, Figure 1, and

Figure 3 is a fragmentary view illustrating the nozzle and a portion of the barrel or cylinder turned through an angle of 45 from the position 90 shown in Figure 1.

Referring to the drawing for more specific details of the invention, 10 represents a nozzle having a shank or shouldered portion 11 and a conical end portion 12. The nozzle is axially 5 bored, as indicated at 13 and counterbored, as at 14. Positioned in the counterbore 14 is a plug 15 axially bored, as indicated at 16, and provided with a passage 1'7 communicating with the axial bore 13 in the nozzle. Positioned in the axial bore 16 is a needle 18 having a shoulder 19, and threaded upon the' plug 15 is a nipple 20 having a cone or conical end portion 21 axially thereon from the seat 23, and the heel of the needle is seated in the axial bore 16 and serves to retain the instrument in spaced relation to the work.

As the point of the needle wears, or in instances where it is desired to support the discharge end of the nozzle in any desirable spaced relation to the work, the nipple 20 may be adjusted on the plug to compensate for the wear on the point of the needle or to attain the adjustment desired.

Positioned in the nozzle is a diametrical bore 24 transversally disposed with respect to thc axial bore 13. As shown, the diametrical bore 24 has positioned therein a sleeve 25. Positioned in one end of the sleeve 25 is a plug 26 .axially bored as indicated at 27, and positioned for reciprocation in the sleeve is a plunger 28 having a reduced end portion 29 extending through the bore in the plug 26 and threaded to receive a nut 30. A coil spring 31 is Wound around the reduced end portion 29 between the plug 26 and a shoulder 32 formed on the plunger by the reduced end portion.

'Ihe plunger 28 has positioned thereon a nut 33 adapted to limit the movement of the plunger in one direction and a thumb piece 34 for actuating the plunger, and formed in the body of the plunger is a circumferential groove or slot 35 adapted to register through suitable openings in the sleeve 25 with the axial bore 13 in the nozzle when the plunger is moved inwardly.

Due to the relative position of the plug 26 and the plunger 28 in the sleeve 25, there is provided a chamber 36 connected by a passage 37 to the axial bore 13 below the plunger, so that when the plunger 28 is moved inwardly by the thumb piece 34 against the stress of the coil spring 31 to register the groove 35 with the axial bore 13 to permit a ow of paint from the container through the nozzle, the chamber is exhausted and upon releasing the plunger to close the passage in the nozzle, a vacuum is formed in the chamber which imposes suction through the bore 16 and the passages 17 and 37 to withdraw the paint or lacquer from the nozzle and to store the same in the chamber 36, so that upon subsequent pressure being applied to the thumb piece 34, the material thus stored is forced through the passages 37 and 17 and the bore 16 to the delivery end of the nozzle.

Positioned in the shank or shouldered portion 11 of the nozzle is a recess 38 communicating with a bore 39 arranged substantially parallel to the axial bore 13 and opening in the conical portion of the nozzle as indicated at 40, and positioned in the recess adapted to close the passage 37 is a ball valve 41, the object of which will hereinafter appear.

Threaded, or otherwise secured, to the shouldered portion 11 of the nozzle is a barrel or hollow cylindrical body 42 having a cap 43 threaded thereon and provided with the conventional vent 44. The cap 43 has positioned therein for reciprocation a rod 45 provided upon one end with a suitable handle 46 and on the other end of the rod is a plunger 47. Positioned on the rod 45, intermediate the cap 43 and the plunger 47, is a coil spring 48.

In operation, the nozzle is submerged in paint or lacquer sufficiently to cover the opening 40 to the passage 39 whereupon the rod 45 is pulled outward by the handle 46 against the stress of the spring 48, and the plunger 47 moving toward the top of the barrel creates a vacuum to draw paint or lacquer through the passage 39 and recess 38 past the ball valve 41 -into the barrel 42. Upon releasing the handle 46, the spring 48 imposes pressure on the contents of the barrel and causes the ball valve 41 to seat in the recess 38. The instrument is now ready for use.

Upon engaging the surface to be operated on with the instrument, the needle is reciprocated from its seat 23 in the nipple 20, whereupon the thumb piece 34 is pressed to move the piston 28 to register the circumferential groove 35 therein with the axial bore 13. With the instrument in this position paint is ejected by the plunger 47 through the bore 13, the groove 35 in the plunger, the passage 17 and axial bore 16 in the plug to the delivery end of the nozzle.

At the end of the stroke, pressure is removed from the thumb piece 34 whereupon the coil spring 31 actuates the plunger 28 to stop the :Flow of paint or lacquer through the passage 13 and simultaneously with this operation a vacuum is produced between the head of the plunger and the threaded plug 26 in the end of the sleeve.

This vacuum imposes suction in the passages 37 and 17 and the bore 16 in the plug 15 and around the valve seat in the nipple 20, so that all excess paint is withdrawn from the surface operated upon and any possibility of blotting the stripe is avoided.

It is, of course, to be understood that the plug 26 or the stroke of the plunger 28 may be ad- ,iusted to increase or decrease the vacuum between the plug and the head of the piston, so that adequate suction may be provided for the proper operation of the instrument.

Although the invention has been described in connection with certain specic embodiments, the principles involved 'are susceptible to numerous other applications that will readily occur to persons skilled in the art. The invention is, therefore, to be limited only as indicated by the scope of the appended claims.

Having thus described the various features of my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a striping instrument having a uid container, a nozzle structure comprising a body having and axially extending passage therethrough in communication with the container and a chamber extending transversely therein and intersecting the axially extending passage, duct means connecting one end of the chamber with the axially extending passage between the nozzle end and the chamber, a slidable valve member in the chamber controlling flow of fluid through the axial passage in the nozzle body, the sliding movement of the valve member in one direction creating pressure in the duct means and the sliding movement of the valve member in the opposite direction in the chamber creating a suction in the duct means, and means for regulating the valve stroke in either direction of its movement.

2. In a striping instrument having a fluid container, a nozzle structure comprising a body having an axially extending passage therethrough communicating with the container and wall means forming a chamber extending transversely of and intersecting the axially extend ing passage, ductmeans connecting one end of the chamber with the axial passage between the nozzle end and the chamber, a valve member having a limited reciprocable movement in the chamber controlling the flow of fluid through the axial passage in the nozzle body, and abutment means adjustable on the valve member and engageable with the Wall means for regulating the valve movement in both directions.

3. In a striping instrument having a fluid container, a nozzle structure comprising a body having a passage extending axially therethrough in communication with the container and another passage extending transversely therethrough and intersecting the axially extending passage, a sleeve xed in the transversely extending passage, said sleeve having passages establishing communication with the axial passage through the nozzle body, a reciprocable valve member in the sleeve and projecting from one end thereof, said valve member having a grooved portion adapted to establish communication between the passages in the sleeve, a plug in one end of the sleeve through which the valve member extends, said sleeve and nozzle having a passage extending from the interior portion of the sleeve adjacent the plug to the axial passage in the nozzle, a spring in the sleeve normally urging the valve member outwardly into a position cutting oi communication between the passages in the sleeve which communicate with the axial passage in the nozzle, and adjustable means associated with the valve member and sleeve for regulating the extent of the reciprocable movement of the valve member relative to the sleeve.

WILLIAM CARL HARBISON. 

